USB: cdc-wdm: fix memory leak
cleanup() is not called if the last close() comes after
disconnect(). That leads to a memory leak. Rectified
by checking for an earlier disconnect() in release()
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index b29a981..650e1da 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -622,6 +622,8 @@
kill_urbs(desc);
if (!test_bit(WDM_DISCONNECTING, &desc->flags))
desc->manage_power(desc->intf, 0);
+ else
+ cleanup(desc);
}
mutex_unlock(&wdm_mutex);
return 0;